semi-auto installing fonts

Hello,in order to help users installing a custom font permanently, I thought of "launching" such font (myFont.ttc), so that the only thing users have to do is to click the Install button of the Install dialog.This works on the Mac, but it does not work on Windows, in the sense that the Install dialog does not pop up. Yet that font once double-clicked opens up the Install dialog.Although my font is located in SpecialFolder.ApplicationData, the issue can be seen running this simple code targeting a font:

Thank you, Michel.May I ask you where does "start" come from? I mean, is there a suite where there are other commands beside "start"?Or, in the terminal (Mac), after executing "man", what should I look for?Thanks again.

Thank you, Eduardo, for the details. I'm glad I found some "verbs" that may come useful to me when Xojo functions do not apply; for instance "del" or "move"; in fact, I found that as f.launch did not work for font-files, so f.delete and f.move too do not delete nor move font-files.

@Michel:Yes, I knew that it is for Windows, but I thought Carlo had an idea about this because he mentioned how to "launch the font" on macOS, which normally invokes Font Book. Validation in this case is not necessary because the fonts are validated already some hundred times by other users.

@Jean-Yves:That was exactly what my question was about. What I found out is that I can do it with one font only. Multiple fonts in one "launch command" are ignored by Font Book. Only the first one is processed. I thought Carlo might have an idea how to do it for multiple fonts by launching them a "special way" (with Font Book).